Details of the chart of nuclides in the vicinity of
26P

In the rollover image of the picture below you can see the decay processes starting from 26P. After the first β+ decay we get 100% 26S. Then the main branch is β+ decay again (denoted by ε in the chart). However thare is also a thin branch (~1%) where the 26S nucleus gets rid of its high excitation energy by emitting a proton rather than a γ photon. The product of this decay is 26Si which does not normally decay by proton emission although it is still relatively rich in protons (otherwise it would not show β+ activity after all). This shows that the excited state of the nucleus is important for the proton to conquer the Coulomb barrier.